# Install Debian packages required for `buildroot`.
RUN apt-get update --yes && apt-get install --no-install-recommends --yes \
    gawk \
    gperf \
    help2man \
    python3-dev \
    texinfo \
    unzip \
    libtool \
    libtool-bin \
    && apt-get clean autoclean --yes \
    && apt-get autoremove --yes \
    && rm -rf /var/lib/{apt,dpkg,cache,log}/

COPY \
  imagefiles/install-buildroot-toolchain.sh \
  buildroot.config \
  /dockcross/

# Build and install the toolchain, cleaning up artifacts afterwards.
RUN mkdir /dockcross/buildroot \
    && cd /dockcross/buildroot \
    && /dockcross/install-buildroot-toolchain.sh \
    -c /dockcross/buildroot.config \
    -v "${BR_VERSION}" \
    && rm -rf /dockcross/buildroot /dockcross/install-buildroot-toolchain.sh

# Restore our default workdir (from "dockcross/base").
WORKDIR /work